{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1322149",
    "entityType": "User",
    "nonce": "0xef49e5abd1d353caa845c9fa81ccddf57cdc9ee48d25cc29484494f6a6202a2e",
    "signature": "0xce6922b544a3fca985bae58a61478abf863ef5b2ee1b404884af14b1b288874f6acfc7e20d5025cc3a12e816898e1f6e8b8fedeae8d2f7ec80c183129f091f0f1c",
    "signer": "0x16BE3cc7Ee03C75AD10a94fb7234B045D351825c",
    "userId": "66529124"
  }
}